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Submission #1055005

# Submission time Handle Problem Language Result Execution time Memory
1055005 2024-08-12T13:51:41 Z Adomas08 Palembang Bridges (APIO15_bridge) C++14
63 / 100
 2000 ms 8156 KB 
    #include <bits/stdc++.h>

    using namespace std;
    int k, n;
    long long curans;
    vector <int> h;
    bool sorting(pair <int, int> a, pair <int, int> b){
    return a.first + a.second < b.first + b.second;
    }
    int findmedian(vector<pair<int, int>> j){
    vector <int> d;
    for (int i = 0; i < j.size(); i++){
        d.push_back(j[i].first);
        d.push_back(j[i].second);
    }
    d.erase(remove(d.begin(), d.end(), -1), d.end());
    sort (d.begin(), d.end());
    if (d.size() == 0) return 0;
    return (d[d.size() / 2] + d[d.size() / 2 - 1]) / 2;
    }
    int main(){
    long long ans = 0, dans = 0;
    int k, n;
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> k >> n;
    int a[n*2];
    vector <int> z;
    vector <pair<int,int>> v;
    char b[n], d[n];
    for (int i = 0; i < n; i++){
        cin >> b[i] >> a[i*2] >> d[i] >> a[i*2+1];
        if (b[i] == d[i]){
            v.push_back({-1, -1});
            z.push_back(-1);
            z.push_back(-1);
        }
        else {
            v.push_back({a[i*2], a[i*2+1]});
            z.push_back(a[i*2]);
            z.push_back(a[i*2+1]);
        }
        if (a[i*2] > a[i*2+1]){
            swap(a[i*2], a[i*2+1]);
        }
        dans += a[i*2+1] - a[i*2];
    }
    int f;
    if (k == 1){
    while (k--){
        f = findmedian(v);
        for (int i = 0; i < n; i++){
            if (f >= a[i*2] && f <= a[i*2+1]){
                v[i].first = -1;
                v[i].second = -1;
            }
        }
    }
    for (int i = 0; i < n; i++){
        if (b[i] == d[i]){
            ans += a[i*2+1] - a[i*2];
        }
        else{
            if (v[i].first == -1){
                ans += a[i*2+1] - a[i*2] + 1;
            }
            else{
                if (f < a[i*2]) ans += 1 + a[i*2+1] - a[i*2] + 2 * (a[i*2] - f);
                if (f > a[i*2+1]) ans += 1 + a[i*2+1] - a[i*2] + 2 * (f - a[i*2+1]);
            }
        }
    }
    }
    else{
        ans = LLONG_MAX;
        long long xans;
        int f = -1, g = -1, af, ag, c;
        sort(v.begin(), v.end(), sorting);
        vector <pair<int, int>>start(v.begin(), v.begin() + 1);
        vector <pair<int, int>>ends(v.begin() + 1, v.end());
        for (int N = 1; N <= n; N++){
        if (f != -1){
            af = f;
            ag = g;
        }
        h = z;
        curans = dans;
        if (N != 1){
            start.push_back(v[N-1]);
            ends.erase(ends.begin());
        }
        f = findmedian(start);
        g = findmedian(ends);
        if (af != f || ag != g){
        for (int i = 0; i < n; i++){
            if (f >= a[i*2] && f <= a[i*2+1]){
                h[i*2] = -1;
                h[i*2+1] = -1;
            }
        }
        for (int i = 0; i < n; i++){
            if (g >= a[i*2] && g <= a[i*2+1]){
                h[i*2] = -1;
                h[i*2+1] = -1;
            }
        }
        for (int i = 0; i < n; i++){
        if (b[i] != d[i]){
            if (h[i*2] == -1){
                curans += 1;
            }
            else{
                if (f < a[i*2])  c = 1 + 2 * (a[i*2] - f);
                else c = 1 + 2 * (f - a[i*2+1]);
                if (g < a[i*2]) c = min(1 + 2 * (a[i*2] - g), c);
                else c = min(1 + 2 * (g - a[i*2+1]), c);
                curans += c;
            }
        }
    }

    ans = min(curans, ans);
        }
        }
    }
    cout << ans;
    }

Compilation message

bridge.cpp: In function 'int findmedian(std::vector<std::pair<int, int> >)':
bridge.cpp:12:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for (int i = 0; i < j.size(); i++){
      |                     ~~^~~~~~~~~~
bridge.cpp: In function 'int main()':
bridge.cpp:76:19: warning: unused variable 'xans' [-Wunused-variable]
   76 |         long long xans;
      |                   ^~~~
bridge.cpp:94:27: warning: 'ag' may be used uninitialized in this function [-Wmaybe-uninitialized]
   94 |         if (af != f || ag != g){
      |                        ~~~^~~~
bridge.cpp:94:16: warning: 'af' may be used uninitialized in this function [-Wmaybe-uninitialized]
   94 |         if (af != f || ag != g){
      |             ~~~^~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 508 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 460 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 360 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 13 ms 5920 KB Output is correct
13 Correct 29 ms 6856 KB Output is correct
14 Correct 21 ms 5832 KB Output is correct
15 Correct 16 ms 4160 KB Output is correct
16 Correct 16 ms 6344 KB Output is correct
17 Correct 19 ms 7156 KB Output is correct
18 Correct 22 ms 6740 KB Output is correct
19 Correct 26 ms 6720 KB Output is correct
20 Correct 18 ms 6600 KB Output is correct
21 Correct 27 ms 6848 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 452 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 452 KB Output is correct
12 Correct 0 ms 348 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 21 ms 568 KB Output is correct
14 Correct 62 ms 568 KB Output is correct
15 Correct 67 ms 348 KB Output is correct
16 Correct 2 ms 348 KB Output is correct
17 Correct 16 ms 536 KB Output is correct
18 Correct 9 ms 344 KB Output is correct
19 Correct 20 ms 580 KB Output is correct
20 Correct 25 ms 836 KB Output is correct
21 Correct 47 ms 344 KB Output is correct
22 Correct 27 ms 548 KB Output is correct
23 Correct 14 ms 348 KB Output is correct
24 Correct 22 ms 576 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 17 ms 560 KB Output is correct
14 Correct 56 ms 564 KB Output is correct
15 Correct 65 ms 348 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 16 ms 540 KB Output is correct
18 Correct 8 ms 348 KB Output is correct
19 Correct 18 ms 572 KB Output is correct
20 Correct 23 ms 344 KB Output is correct
21 Correct 48 ms 348 KB Output is correct
22 Correct 22 ms 548 KB Output is correct
23 Correct 14 ms 576 KB Output is correct
24 Correct 22 ms 348 KB Output is correct
25 Execution timed out 2052 ms 8156 KB Time limit exceeded
26 Halted 0 ms 0 KB -